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Finding the Fourth Proportional to 377.64, 520.67 and 358.07

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Solution

The fourth proportional to 377.64, 520.67 and 358.07 is: 493.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    377.64 : 520.67 = 358.07 : x
  2. Step 2: Convert to fraction form
    377.64/520.67 = 358.07/x
  3. Step 3: Cross multiply
    377.64x = 520.67 × 358.07
  4. Step 4: Simplify right side
    377.64x = 186,431.91
  5. Step 5: Solve for x
    x = 186,431.91/377.64
  6. Step 6: Final answer
    x = 493.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.